Air-humidifier



A W. HSSAUER.

AIR HUMIDIFIER. APPLICATION FILED 050.22, 1911 1 77,5940 Patented Ma1,1921.-

. Br A? A HOB/V578 Miran s TTES' ADOLPH'. W. 'LISSAUER, 01E NEVT YORK,N. Y.

Specification of Letters Patent. I

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Application area December 22, 1917. Serial no. sacs ice.

To all whom it. may concern Be it known that I, ADoLPH W. LIssAUnR,

a citizen ofthe United States, and a resident of the city of New York,borough of Manhattan, in the county and State of New York, have inventeda new and Improved Air-Humidifier, of which the followingis a full,clear, and exact description.

My invention relates to air humidifiers in which a water mist is createdto humidity and'clean the air forced therethrough. The

part of the application, the figure represents a diagrammatic sectionalview through a humidifier embodying my invention.

.Referring to the drawings,.1 is the Inlet air conduit spaced from theoutlet air conduit 2 by a chamber 3 which has a portion extending belowsaid conduits and forming at the bottom a sump 4. A tank 5 is providedabove the chamber 3. Water is supplied to the tank 5 from the sump 4 bya water pump 6 driven from a suitable motor 7. The tank 5 has anoverflow 8 leading to the sump, which, in turn, has an overflow 9,

r so that proper levels of water may be mainpurpose of the separators isto eliminate the tained in both the tank 5 and the sump 4.

A series of nozzles 10 are provided within the chamber 3 in the'path ofthe air current. The nozzles 10 are supplied with water from a conduit11 extending into the chamber from thetank 5. In other words,

the water is fed gravitationally to the 1102- zles 10. To break up thewater so ied'to the nozzles into a mist, air is supplied to each nozzlefrom a conduit-.12 leading to an air ump 13. The tank 5 has also anoutlet or outlets 14 I into the chamber 3, theseoutletsbeing *tormed inthe bottom of the tank, that is, the top of the chamber 3, and betweenthe nozzles and separators 15 provided in the chamber in proximity tothe outlet air conduit 2. The

water mechanically carried away by the air in its movement "to theseparators from the nozzles, and also to elimlnate any dustthat may becarried by the air. The outlet open ings 14 may be varied in size bymeans of a slide 16, so that the quantity of water falling from the tankdirectly into the chamber may be varied thereby. The slide 16 isprovided with a handle 18 for manipulating the slide. Preferably baffles17 are providedat the outlets 14 to prevent the moving air fromdeflecting and breaking up the flow of water at the discharge openings14 andforcing it toward the outlet air conduit 2. A heating coil 19 isprovided in the tank 5 to control the temperature of water in the tank.This Water is used for the purpose of heatingfthe air passingtherethrough; and. by varying the quantity of water flowing through theoutlets 14 from the tank 5, the temperature pf tle air passingtherethrough may be reguate By providing a tank above the humidifier, Iam able to use a rotary water pump, as the earn d Maylt), 1921.

lift is comparatively small and no great refor breaking up thegravitationally-fed water will be considerably less than that whichwould be necessary to drive a pump;

for breaking up the water into a mist directly. Furthermore, thebreaking up of the, gravitationally-fed water by air permits me to.introduce air. into the water to be 'broken up, which will have a'tendency to expand and thereby increase the disintegration of the waterand give a better saturation .of the air passing through the humidifyingchamber 3. Furthermore, the air used for breaking up the atomized watertends to difl'use in the body of air forced through the humidifier andtransmit the water it carries to the air with which it comes in contactand during its diifusion.

By using air for atomizing the water a very fine mist is obtained, andsince absorption of the moisture in the air is inversely proportional tothe size of the drops, the efliciency of the" humidifier isin'di'rectproportion to the mist created.

By supplying water through the openings 14 in the tank, additional heatis supplied to the air so as to increase the absorption power I of thepassing air without supplying that heat to the atomized moisture bymeans of the air which atomizes it. In other words, to reduce the amountof air which would be necessary to atomize andraise the temperature ofthe Water supplied in the form of mist I supply only enough air toatomize the water and supply the additional heat necessary by means ofthe heated water discharged from the tank 5 in the path of the air inwhich the mistis formed. This heated water passing through the outlet 14may be falling in the form of a spray or a thin sheet.

By using air for atomizing' the gravitationally fed water I can usenozzles of comparatively large outlet and, therefore, limit the dangerof clogging the nozzles; The air can also be used for blowing out thenozzles forming means and the separator.

2. An air humidifier comprising, incombination, an air chamber throughwhich an air current can be created, a sump in the bottom of thechamber, a tank on the top of the chamber, means for supplying waterfrom the sump to the tank, a conduit from the tank into the chamber,nozzles-on said conduit,

means for supplying air to the nozzles to break up the water suppliedthereto from the conduit, a separator for eliminating excess of moisturesupplied to the air, said tank having means for supplying water to thechamber between the nozzles and the separator. r

3. An air humidifier comprising, in combination, an air chamber throughwhich an I air current can be created, a tank at the top of saidchamber, water spray-forming means in the path of the air current, saidspray forming means being supplied from the tank, and a separator insaid chamber for eliminating excess of moisture supplied to the air,said tank having means in the bottom for delivering water to the chamberbetween the spray-forming means and the v separator. I Y 1 4. Anairhumidlfier comprising 1n combination an air chamber through which anyair current can be created, means for supplying to the air current awater mist, a

separator, and means for supplying water in a less divided condition tothe current of air u i and mist, at a temperature of the water mist,

said water being supplied in a direction,

transversely of the air current and mist.

5. An air humidifier comprising in combination an air chamber throughwhich an air current can be created, means for supplying to the aircurrent a water mist, a separator, and means "for supplying water in aless divided condition to the current of air and mist in a directionsubstantially at right angles to the air current, said water supplybeing of a temperature substantially that of the water mist. 1 ADOLPH W.LISSAUER.

